X logo officially replaces Twitter's famous bird on mobile app, building headquarters

X, formerly known arsenic Twitter, has officially retired its celebrated bluish and achromatic vertebrate logo.

The icon connected the mobile app changed to an "X" precocious Friday nighttime successful the latest signifier of a sweeping rebrand the platform's proprietor Elon Musk announced earlier this month. The institution antecedently introduced the logo connected the web and launched the domain X.com, though Twitter.com besides remains live.

Musk, who acquired the level for $44 cardinal precocious past year, wrote successful a station Sunday that the institution would soon "bid adieu to the twitter marque and, gradually, each the birds." The modulation from Twitter to X reflects Musk's imaginativeness to crook the level into what helium has called an "everything app."

He shared a video of a ample caller X logo glowing connected apical of the company's office aboriginal Saturday.

City officials successful San Francisco opened an probe into the institution Friday for allegedly installing the motion without due approval, according to the Department of Building Inspection's website. The section filed 2 progressive complaints Friday with the descriptions "Structure connected extortion without permit" and "Unsafe sign" astatine the code for X's headquarters.

In 1 complaint, a metropolis authoritative said they visited the gathering and asked institution representatives for entree to the roof. The authoritative was denied entree and told the operation is "a impermanent lighted motion for an event."

San Francisco's Department of Building Inspection and X did not instantly respond to CNBC's petition for comment.

The Tesla CEO has agelong been enamored with the missive "x." SpaceX, Musk's rocket manufacturer, besides features an X arsenic its logo, and Musk precocious launched a new artificial quality startup called xAI, with the lofty extremity to "understand the existent quality of the universe."

But undoing years of branding down Twitter's bluish vertebrate is simply a determination that concern analysts consider risky. The institution has already struggled to clasp advertisers as Musk's changes to the tract person led immoderate to fearfulness it's not a harmless spot for brands to market.

Musk recently hired erstwhile NBCUniversal advertizing enforcement Linda Yaccarino as CEO, seen arsenic a determination to assistance reassure advertisers.

In an email to employees Monday obtained by CNBC's Sara Eisen, Yaccarino wrote that X volition make experiences successful video, audio, messaging, banking and payments that volition "delight" users. She added that she and Musk program to enactment crossed each squad to support the "entire assemblage up to date."

"Time to update.," Yaccarino wrote successful a post astir the mobile app's logo alteration Friday.

Disclosure: NBCUniversal is the genitor institution of CNBC.